EP 1562188 A1 20050810 - Improved rewritable optical storage medium
Title (en)
Improved rewritable optical storage medium
Title (de)
Verbessertes wiederbeschreibbares optisches Aufzeichnungsmedium
Title (fr)
Support d'enregistrement optique réinscriptible amélioré
Publication
Application
Priority
EP 04002785 A 20040209
Abstract (en)
An improved rewritable optical storage medium comprises from bottom to top a substrate, a first dielectric layer, a recording layer, a second dielectric layer, and a reflective layer. Nitrogen is added into the ZnS-SiO2 material of the first and second dielectric layers to enhance the shielding effect of the dielectric layers to the recording layer and also prevent sulfur of the dielectric layers from diffusing to the recording layer, thereby greatly increasing the number of rewritable times of the optical storage medium. <IMAGE>
IPC 1-7
IPC 8 full level
G11B 7/24 (2006.01); G11B 7/243 (2006.01); G11B 7/2433 (2013.01); G11B 7/257 (2006.01); G11B 7/2578 (2013.01); G11B 7/258 (2006.01)
CPC (source: EP)
G11B 7/2433 (2013.01); G11B 7/2578 (2013.01); G11B 7/258 (2013.01); G11B 2007/24308 (2013.01); G11B 2007/2431 (2013.01); G11B 2007/24312 (2013.01); G11B 2007/24314 (2013.01); G11B 2007/24316 (2013.01); G11B 2007/25713 (2013.01)
Citation (search report)
- [XY] EP 1059634 A1 20001213 - KAO CORP [JP]
- [Y] EP 1369859 A1 20031210 - SONY CORP [JP]
- [X] US 6445675 B1 20020903 - EBINA ATSUSHI [JP], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04002785 A 20040209